<wicket:extend>
    <form wicket:id="form" class="prompt-fields-upon-issue-open-setting">
        <input wicket:id="fields" type="hidden" class="form-control">
        <div class="actions">
            <input type="submit" class="btn btn-primary dirty-aware" value="Save">
            <a wicket:id="useDefault" class="btn btn-primary">Use Default</a>
        </div>
    </form>
</wicket:extend>